After battling an Alkonost and an Ice Gnoll (Hard Mode), with four Dice equipped, a Poison Ring was dropped.

After battling a Yeti and an Ice Gnoll (Hard Mode), with four Dice equipped, a Full Armor I was dropped.

Specific to Icy Cave in normal difficulty, Ice Gnoll has good drops if farmed: Rocket, Monocle, Booster, Talisman, and all of the individual stat "start X" where X is one attribute like attack, speed, regen, etc.